HCha/Stockfish
1
0
Fork 0
mirror of https://github.com/HChaZZY/Stockfish.git synced 2025-12-22 10:06:26 +08:00
Code Issues Packages Projects Releases Wiki Activity

Prefer 0 to EmptyBoardBB

Browse Source 
Easier and even faster or at least easier to optimize.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-12-03 11:56:11 +01:00
parent 5c5af4fa65
commit a44c5cf4f7
9 changed files with 41 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/types.h
View File

@@ -158,6 +158,24 @@ typedef uint64_t Bitboard;
const int PLY_MAX = 100;
const int PLY_MAX_PLUS_2 = PLY_MAX + 2;
const Bitboard FileABB = 0x0101010101010101ULL;
const Bitboard FileBBB = FileABB << 1;
const Bitboard FileCBB = FileABB << 2;
const Bitboard FileDBB = FileABB << 3;
const Bitboard FileEBB = FileABB << 4;
const Bitboard FileFBB = FileABB << 5;
const Bitboard FileGBB = FileABB << 6;
const Bitboard FileHBB = FileABB << 7;
const Bitboard Rank1BB = 0xFF;
const Bitboard Rank2BB = Rank1BB << (8 * 1);
const Bitboard Rank3BB = Rank1BB << (8 * 2);
const Bitboard Rank4BB = Rank1BB << (8 * 3);
const Bitboard Rank5BB = Rank1BB << (8 * 4);
const Bitboard Rank6BB = Rank1BB << (8 * 5);
const Bitboard Rank7BB = Rank1BB << (8 * 6);
const Bitboard Rank8BB = Rank1BB << (8 * 7);
enum ValueType {
VALUE_TYPE_NONE = 0,
VALUE_TYPE_UPPER = 1,